On Windows, the `winerror.h` header defines `WAIT_TIMEOUT` as a macro.
This introduces a fragile dependency on header inclusion order: if
Windows headers happen to be included before using `WAIT_TIMEOUT`, the
preprocessor expands it into a numeric literal, causing syntax errors.
Rename the variable to `TEST_WAIT_TIMEOUT` to remove this fragility and
avoid the collision entirely.
-BEGIN VERIFY SCRIPT-
sed -i 's/\<WAIT_TIMEOUT\>/TEST_WAIT_TIMEOUT/g' $(git grep -l 'WAIT_TIMEOUT' ./src/)
-END VERIFY SCRIPT-
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